NCIt related terms : Xylocitin; Xylotox; Xylocaine;
NCIt definition : The hydrochloride salt form of lidocaine, an aminoethylamide and a prototypical member
of the amide class anesthetics. Lidocaine interacts with voltage-gated Na channels
in the nerve cell membrane and blocks the transient increase in permeability of excitable
membranes to Na . This prevents the generation and conduction of nerve impulses and
produces a reversible loss of sensation. Lidocaine hydrochloride also exhibits class
IB antiarrhythmic effects. The agent decreases the flow of sodium ions into myocardial
tissue, especially on the Purkinje network, during phase 0 of the action potential,
thereby decreasing depolarization, automaticity and excitability.;